Conservation area document

There is a problem

conservation-area column must match the reference field in the conservation area dataset

reference: CA5
conservation-area: undefined
SCC Historic Environment Record
name: Portswood Residents' Gardens
documentation-url: https://www.southampton.gov.uk/conservation-areas/
document-url: https://www.southampton.gov.uk/media/4ian33xb/portswood_residents_garden_conservation_area_af.pdf
document-type: management-plan
notes: Most buildings covered by Article 4 Direction. Nos 16a, 19, 20a, 27a & 29a Abbott's Way, Brookfield Place (all), Nos 4, 6, 40 & 42 Brookvale Rd, and Nos 1, 3 & 5 Russell Place are exempt.
entry-date: 1996-01-01
start-date: 1996-01-01
end-date

Your data is missing a conservation-area.

The Conservation area document guidance explains how to fix the issue:

The reference for the conservation area this document refers to, as used in the conservation area dataset.

Example: CA1